CN101883295A - Service transmission processing methods, node equipment and network system - Google Patents
Service transmission processing methods, node equipment and network system Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/16—Time-division multiplex systems in which the time allocation to individual channels within a transmission cycle is variable, e.g. to accommodate varying complexity of signals, to vary number of channels transmitted
- H04J3/1605—Fixed allocated frame structures
- H04J3/1652—Optical Transport Network [OTN]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J2203/00—Aspects of optical multiplex systems other than those covered by H04J14/05 and H04J14/07
- H04J2203/0001—Provisions for broadband connections in integrated services digital network using frames of the Optical Transport Network [OTN] or using synchronous transfer mode [STM], e.g. SONET, SDH
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- H04J2203/006—Fault tolerance and recovery
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Abstract
The embodiment of the invention discloses service transmission processing methods, node equipment and a network system, wherein one method comprises the following steps: receiving service data after the relay processing carried out by a 3R relay node, wherein the relay processing comprises optical signal channels OCh for terminating and regenerating the service data, wherein an optical signal channel transmission unit OTU carries out transparent transmission when the optical signal channels OCh are terminated; carrying out defect detection on the path of the optical signal channel transmission unit OTU to obtain the detection results of the path of the optical signal channel transmission unit OTU. The other method comprises the following steps: obtaining the overhead in frames of an optical transmission network OTN; judging whether the overhead contains the customer layer failure information inserted after the signal failure or not, and determining the defect generation path according to the customer layer failure information if YES. The technical scheme of the embodiment of the invention can complete the processing process in the service transmission.
Description
Technical field
The present invention relates to communication technical field, be specifically related to a kind of service transmission processing methods, node device and network system.
Background technology
Optical transfer network (OTN, Optical Transport Network) is a kind of new light tranmission techniques, along with the development of OTN technology, and a large amount of protections of adopting variety of way of beginning in the optical-fiber network at present.For optical transport network, generally comprise service aisle and protection passage, when the condition of switching takes place (for example service aisle or protection passage break down), then service aisle and protection interchannel are switched.
For optical channel (OCh, Optical Channel) transmission process, there are several modes in the prior art.Wherein a kind of mode is mainly to use OCh defective and optical channel delivery unit (OTUk, Opticalchannel Transport Unit) defective as switching condition, OTUk and the OCh regeneration that terminates simultaneously, and after detecting OCh defective and OTUk defective, triggering is switched.Fig. 1 is a prior art optical channel transmission process mode schematic diagram.Suppose to comprise between node A and the node C service aisle and the protection passage, its service aisle is an OCH path, its protection passage comprise two OCH path, one be from node A to Node B, one be from Node B to node C, wherein Node B is the 3R via node.Node B be with the defective between detected node A and the B (OCh defective and OTUk defective) as the condition of switching, node C is as the condition of switching with the defective between detected Node B and the C (OCh defective and OTUk defective).
In research and practice process to prior art, the inventor finds that there is following problem in prior art: in the prior art service transmission processing methods, thereby, switches node C so can only be simultaneously detecting to trigger to the OCh defective between Node B and the C and OTUk defective, and node C can't detect and have defective between node A and the B, so the existing business method for transmission processing is left to be desired.
Summary of the invention
The technical problem that the embodiment of the invention will solve provides a kind of service transmission processing methods, node device and network system, can improve the processing procedure in the professional transmission.
For solving the problems of the technologies described above, embodiment provided by the present invention is achieved through the following technical solutions:
A kind of service transmission processing methods comprises:
Receive the business datum after the 3R via node carries out relay process, described relay process comprises the optical channel OCh of the described business datum of termination regeneration, and wherein, when terminating described optical channel OCh, OTU carries out transparent transmission to the optical channel delivery unit;
Defects detection is carried out in path to described optical channel delivery unit OTU, obtains the testing result in the path of described optical channel delivery unit OTU.
A kind of service transmission processing methods comprises:
Obtain the expense in the optical transfer network OTN frame;
Judge whether contain the client layer fail message that behind Signal Fail, is inserted in the described expense, if, the path of determining to take place defective according to described client layer fail message.
A kind of node device comprises:
Receiving element is used to receive the business datum after the 3R via node carries out relay process, and described relay process comprises the optical channel OCh of the described business datum of termination regeneration, and wherein, when terminating described optical channel OCh, OTU carries out transparent transmission to the optical channel delivery unit;
Detecting unit is used for defects detection is carried out in the path of described optical channel delivery unit OTU, obtains the testing result in the path of described optical channel delivery unit OTU.
A kind of node device comprises:
Acquiring unit is used for obtaining the expense of optical transfer network OTN frame;
Processing unit is used for judging whether described expense contains the client layer fail message that is inserted into behind Signal Fail, if, the path of determining to take place defective according to described client layer fail message.
A kind of network system comprises:
First node equipment is used to send business datum;
Via node equipment is used for the business datum that receives is carried out relay process, and described relay process comprises the optical channel OCh of the described business datum of termination regeneration, and wherein, when terminating described optical channel OCh, OTU carries out transparent transmission to the optical channel delivery unit;
Section Point equipment is used to receive the business datum that described via node sends, and defects detection is carried out in the path of described optical channel delivery unit OTU, obtains the testing result in the path of described optical channel delivery unit OTU.
A kind of network system comprises:
First node equipment is used for the business datum that receives is monitored, if find Signal Fail, the client layer fail message is inserted in the expense in the optical transfer network OTN frame;
Section Point equipment is used for obtaining the expense of the optical transfer network OTN frame that described first node equipment sends; Judge whether contain described client layer fail message in the described expense, if, the path of determining to take place defective according to described client layer fail message.
Technique scheme as can be seen; the embodiment of the invention is carried out relay process by the 3R via node; described relay process comprises the optical channel OCh of the described business datum of termination regeneration; wherein; when terminating described optical channel OCh; OTU carries out transparent transmission to the optical channel delivery unit; can be detected the defective in the path of the optical channel delivery unit OTU different with existing protection range by transparent transmission according to optical channel delivery unit OTU; can be for the subsequent process reference of professional transmission process, also with regard to perfect service transmission processing methods.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is a prior art optical channel transmission process mode schematic diagram;
Fig. 2 is the flow chart of the embodiment of the invention one service transmission processing methods;
Fig. 3 is the flow chart of the embodiment of the invention two service transmission processing methods;
Fig. 4 is the embodiment of the invention three service transmission processing methods schematic diagrames;
Fig. 5 is the atomic function model schematic diagram of the new 3R function of embodiment of the invention proposition;
Fig. 6 is the embodiment of the invention four service transmission processing methods schematic diagrames;
Fig. 7 is the embodiment of the invention five service transmission processing methods schematic diagrames;
Fig. 8 is the frame head structural representation of the embodiment of the invention five OTN frames;
Fig. 9 is embodiment of the invention node device one structural representation;
Figure 10 is embodiment of the invention node device two structural representations;
Figure 11 is that embodiment of the invention network system is unified structural representation;
Figure 12 is embodiment of the invention network system two structural representations.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
The embodiment of the invention will provide a kind of service transmission processing methods, can provide more rational processing in the business transmission.
Fig. 2 is the flow chart of the embodiment of the invention one service transmission processing methods, comprises step:
Step 201, reception 3R via node carry out the business datum after the relay process, and relay process comprises the optical channel OCh of termination regeneration business datum, and wherein, during termination optical channel OCh, OTU carries out transparent transmission to the optical channel delivery unit.
Step 202, defects detection is carried out in the path of optical channel delivery unit OTU, obtain the testing result in the path of optical channel delivery unit OTU.
The optical channel OCh of above-mentioned termination regeneration business datum, wherein, during termination optical channel OCh, to optical channel delivery unit OTU carry out transparent transmission can for: when business datum is carried out decapsulation, after the decapsulation of finishing between optical channel OCh and the optical channel delivery unit OTU, do not carry out the decapsulation between optical channel delivery unit OTU and the Optical Channel Data Unit-k ODU; When the business datum after the decapsulation was heavily encapsulated, OTU was packaged into optical channel OCh with the optical channel delivery unit.Because when termination, OTU can directly be base unit with OTU during regeneration by further decapsulation, among all embodiment of the present invention, for for simplicity, this termination regeneration of 3R via node be called OTU is carried out transparent transmission.
Obtain can also comprising after the testing result in path of optical channel delivery unit OTU: if the testing result in the path of optical channel delivery unit OTU is for existing defective, triggering optical channel delivery unit OTU level switch protection.
From this embodiment content as can be seen; the embodiment of the invention is carried out relay process by the 3R via node; described relay process comprises the optical channel OCh of the described business datum of termination regeneration; wherein; when terminating described optical channel OCh; OTU carries out transparent transmission to the optical channel delivery unit; can be detected the defective in the path of the optical channel delivery unit OTU different with existing protection range by transparent transmission according to optical channel delivery unit OTU; can be for the subsequent process reference of professional transmission process, also with regard to perfect service transmission processing methods.
The embodiment of the invention also provides a kind of service transmission processing methods.Fig. 3 is the flow chart of the embodiment of the invention two service transmission processing methods, comprises step:
Expense in the optical transfer network OTN frame can be the frame overhead in the payload structural identification in the frame head part of OTN frame, or the OTUk expense etc. for example of other expenses in the frame head part.
Comprise according to the definite path that defective takes place of client layer fail message: determine that according to the client layer fail message path of generation defective is to be positioned at the node path before of inserting the client layer fail message;
Also comprise after the path according to the definite generation of client layer fail message defective: the path according to the generation defective is to be positioned at the node path before of inserting the client layer fail message, and definite node path afterwards of inserting the client layer fail message is not carried out and switched.
It can be seen from the above, the embodiment of the invention is by obtaining the expense in the optical transfer network OTN frame, judge and whether contain the client layer fail message that behind Signal Fail, is inserted in the expense, therefore can detect the defective of different levels, for the subsequent process reference of professional transmission process, also with regard to perfect service transmission processing methods.
Below be described in further detail embodiment of the invention technical scheme.
The said OCh defective of the embodiment of the invention, comprise that for example payload signal is lost (LOS-P, LOS Lossof signal Payload), payload forward direction defective indication (FDI-P, Forward Defect IndicationPayload), expense forward direction defective indication (FDI-O, Forward Defect Indication Overhead), open connection indication (OCI, Open Connection Indication) etc.
The OTUk defective, for example comprise: trail trace identifier mismatch (OTUk_TIM, OTUk Trailtrace identifier mismatch), degradation defect (OTUk_DEG, OTUk Degraded defect), the back is to defective indication (OTUk_BDI, OTUk Backward defect indicator) etc.
Fig. 4 is the embodiment of the invention three service transmission processing methods schematic diagrames.
As shown in Figure 4, the nodes X in the system, node Y, node A, Node B, node C are the OTN device node, and wherein Node B is the 3R via node.Be provided with a service aisle between node A and Node B, be provided with protection passage and service aisle between Node B and node C.Business datum sends to Node B by node A, sends to node C after Node B is carried out the 3R relaying, sends to node Y by node C.
Concrete, professional transmission course shown in Figure 4 comprises:
1) node A sends to Node B with the business datum that nodes X sends;
2) Node B is carried out the 3R relaying with business datum, sends to node C;
If nodes X needs to send business datum to node A, between nodes X and the node A, between node A and the Node B, between Node B and the node C, respectively an OCH path between node C and the node Y, it between nodes X and the node Y ODUk path, and according to the improvement of the embodiment of the invention to the 3R via node, function as the Node B of 3R via node is updated, it between node A and the node C OTUk path, promptly at the Node B regeneration OTUk that do not terminate, so the path of OTUk striden across Node B, forms an OTUk path (A-B-C) between node A and node C.
3R via node in the embodiment of the invention provides new 3R function, outside can compensating to Optical Signal To Noise Ratio (OSNR, Optical Signal Noise Ratio) deterioration, the main distinction be termination regeneration level with have now different.
Fig. 5 is the atomic function model schematic diagram of the new 3R function of embodiment of the invention proposition.In the atomic function model, general oval expression linkage function, triangle is represented termination function, trapezoidal expression adaption function (function of received signal is adaptive Su Gongneng, and the function that sends signal is an adaptive source function).As shown in Figure 5, new 3R function comprises the OCh/OTUk adaption function in trapezoidal, also comprises the OCh termination function in the triangle.
According to the new 3R function that the embodiment of the invention proposes, remain at 3R via node termination regeneration OCh (termination can be regarded as decapsulation, and regeneration is appreciated that the encapsulation of attaching most importance to), but the regeneration OTUk that do not terminate, so OTUk can cross over 3R via node transparent transmission.
Concrete, the 3R via node to business datum carry out relaying can for: the business datum that receives is carried out decapsulation, business datum is removed overhead part from the OCh level obtain OTUk, no longer obtain Optical Channel Data Unit-k (ODU, Optical Channel DataUnit with the existing the same expense of again OTUk being removed this moment.When heavily encapsulating, no longer need to carry out ODU is increased the process that overhead part obtains OTUk, obtain OCh but directly OTUk is increased overhead part.
Like this, the OTUk path just no longer belongs to same protection range with OCH path.For example among Fig. 4; if by existing 3R function; OCh and OTUk are that termination is regenerated between every adjacent node; be that node A and Node B are as an OCH path; also as an OTUk path; Node B and node C are as an OCH path; also as an OTUk path; this moment, the OTUk path was identical with the protection range of OCH path, but according to new 3R function, the 3R node can be crossed in the OTUk path; be that Node B is crossed in the OTUk path among Fig. 4; then be an OTUk path (A-B-C) between node A and the node C, like this, the OCh level will be no longer identical with the protection range of OTUk level.
3) node C detects the defective of each hierarchical path, determines whether that according to testing result needs switch protection.
Node C can carry out defects detection to the path (OCH path) of the optical channel of described business datum, according to the parameter of described optical channel for example payload signal, openly connect the testing result that parameter such as indication obtains the path of optical channel; And the path (OTUk path) of the optical channel delivery unit of described business datum carried out defects detection, according to the parameter of described optical channel delivery unit for example trail trace identifier parameter etc. obtain the testing result in the path of optical channel delivery unit.
That is to say that the defective of each hierarchical path that node C detects can comprise the OCh defective between Node B and node C, also comprises the OTUk defective between node A and node C.With the scope that needs protection is to be example between Node B and the node C; can only adopt the protection of OCh level this moment; then only detect the OCh defective; this is because after adopting new 3R function; the path of OTUk level is different with the path of OCh level, so needn't consider the trigger condition of OTUk defective as the protection of OCh level.That is to say,, then can think between Node B and node C, to go wrong, can be used as the trigger condition of the OCh level protection between Node B and node C if arrive the OCh defective in the C node detection.If in the defective of C node detection, then can think normal between Node B and node C node less than the OCh level.
In addition, OCh generally has the SF defective that function for monitoring is used to monitor OCH path, the embodiment of the invention further proposes except monitoring the fail message (SF of OCH path, Client Signal Fail) outside the defective, also utilize the expenses such as unused bytes of OTUk that the electricity layer is carried out Signal Degrade (SD, SD Signaldegrade) monitors, comprise that the OCH path scope is carried out error code to be monitored.The expense of being utilized is the source node regeneration at OCH path; destination node termination at OCH path; carry in the expense source node that be provided with information signal correction; these information can identify by the value of byte in the expense; the relevant information that destination node is provided with in expense according to source node; the information corresponding with this node compares; whether can detect has error code to take place; the testing result of error code also can be considered as the OCh defective and as switching the SD condition, and this moment, protection range and the monitoring range of expense of OCH path were the consistent problems that the OCh level can't monitor error code that can solve like this.
Therefore, when the user needs the protection in the path between configuration node A and the C, just can adopt the OTUk defective that meets fully with protection range in the present embodiment as switching condition.When needing the protection in the path between configuration node B and the C, just can adopt the OCh defective that meets fully with protection range as switching condition.In addition, can also utilize OTUk expense (as undefined byte in the OTUk expense) that the scope of OCH path is carried out error code simultaneously monitors.
Fig. 6 is the embodiment of the invention four service transmission processing methods schematic diagrames.
As shown in Figure 6, comprise node A, Node B and node C in the system.Comprise between node A and the node C service aisle and the protection passage, its service aisle is an OCH path, its protection passage comprise two OCH path, one be from node A to Node B, one be from Node B to node C, wherein Node B is the 3R via node.Concrete, professional transmission course shown in Figure 6 comprises:
1) business datum of Node B receiving node A transmission;
2) Node B is carried out the 3R relaying with business datum, sends to node C;
Between node A, B, the C OTUk path, i.e. the new 3R function that proposes according to the embodiment of the invention, at the Node B regeneration OTUk that do not terminate, so the path of OTUk striden across Node B, forms an OTUk path (A-B-C) between node A and node C.
The process that the 3R via node carries out relaying to business datum can repeat no more referring to the description among the embodiment three herein.
3) node C detects the defective of each hierarchical path, determines whether that according to testing result needs switch protection.
Node C can carry out defects detection to the path (OCH path) of the optical channel of described business datum, according to the parameter of described optical channel for example payload signal, openly connect the testing result that parameter such as indication obtains the path of optical channel; Again defects detection is carried out in the path (OTUk path) of the optical channel delivery unit of described business datum, according to the parameter of described optical channel delivery unit for example trail trace identifier parameter etc. obtain the testing result in the path of optical channel delivery unit.
That is to say that the defective of each hierarchical path that node C detects can comprise the OCh defective between Node B and node C, also comprises the OTUk defective between node A and node C.Need the path between node A and the node C being protected is example, and can only adopt the protection of OTUk level this moment, monitors that then the OTUk defective is as switching condition.This is because after adopting new 3R function, the path of OTUk level is different with the path of OCh level, so can not consider the trigger condition of OCh defective as the protection of OTUk level.That is to say,, then can think between node A and node C, to go wrong, can be used as the trigger condition of the OTUk level protection between node A and node C if arrive the OTUk defective in the C node detection.If less than the OTUk defective, then can think normal between node A and node C in the C node detection.In addition, because the OCh level is the service layer of OTUk level, and the scope in its path (AB or BC) is also in the scope (ABC) in the path of OTUk, so also can consider to adopt the trigger condition of OCh defective as the protection of OTUk level.
Fig. 7 is the embodiment of the invention five service transmission processing methods schematic diagrames.
As shown in Figure 7, the nodes X in the system, node Y, node A, Node B are the OTN device node.Be provided with a service aisle between nodes X and node A, be provided with protection passage and service aisle between node A and Node B.
In the embodiment of the invention, by using the defective between client layer fail message (CSF, Client Signal Fail) decision node.
Professional transmission course shown in Figure 7 comprises:
1) node A monitors the process that nodes X sends business datum, does not receive business datum if detect, and Signal Fail also promptly takes place, and then client layer fail message (CSF) is inserted in the expense of OTN frame and sends Node B to;
Suppose to break down between nodes X, the A, node A monitors the process that nodes X sends business datum, does not receive business datum if detect, and Signal Fail also promptly takes place, then client layer fail message (CSF) is inserted in the expense of OTN frame, sends this expense to Node B.
The process that client layer fail message (CSF) is inserted into expense is referring to following description:
The frame header branch of OTN frame includes different overhead part, for example OCh expense, OTUk expense, ODUk expense and frame overhead etc., wherein the position of frame overhead can be arranged on payload structural identification (PSI, the Payload Structure Identifier) present position in the OTN frame.As shown in Figure 8, Fig. 8 is the frame head structural representation of the embodiment of the invention five OTN frames.The 1-7 of the 1st row classifies the OCh expense as, and the 8-14 of the 1st row classifies the OTUk expense as, and the 1-14 that 2-3 is capable classifies the ODUk expense as, and the 4th row the 15th is PSI.
The embodiment of the invention is transmitted CSF by PSI.With certain byte in the multi-frame of PSI, PSI[18 for example] to PSI[255] between per 1 bit of certain byte represent the state of one road client layer signal, for example value is that 0 this road client layer signal of expression is normal, value is that this road client layer signal of 1 expression lost efficacy, and perhaps adopts opposite implication to represent.Insert 0 under the general default situations, the expression client layer signal is normal.Certainly, also can consider to adopt other expenses in the OTN frame structure to transmit CSF.The general requirement just is inserted into CSF among the PSI behind some frames or some milliseconds fast determining to insert the back.For example receiving the serious Signal Fail (SSF that other functional entitys of front pass over, Severe signal fail) after, the adaptive source of k rank optical channel data unit functional entity (ODUkP/XXX_A_So, Optical Data Unit of level kPath/XXX adaptation Source function, XXX represents certain client's business) behind some frames or some milliseconds, fast CSF is inserted among the PSI.
In addition, for the equipment of not supporting above-mentioned functions, can directly insert 0x00 in the expense of untapped OTN frame, if make receiving terminal support above-mentioned functions just can think that client layer signal is normal, like this can be so that support the equipment of above-mentioned functions and do not support that the equipment of above-mentioned functions also can intercommunication.
2) Node B determines whether to switch protection according to the client layer fail message.
Node B detects CSF; then can determine outside protection range (A-B), problem to have occurred; promptly belong to the problem between nodes X and the A; this problem has also just had influence on node A simultaneously to service aisle between Node B and protection passage; make node A all can't use to service aisle between Node B and protection passage; then no matter whether Node B found to go wrong between node A, B according to OCh defective or OTUk defective, can not switch protection, can avoid mistake to switch the generation of protection like this.
Foregoing describes embodiment of the invention service transmission processing methods in detail, and corresponding, the embodiment of the invention provides a kind of node device and network system.
Fig. 9 is embodiment of the invention node device one structural representation.
As shown in Figure 9, node device comprises: receiving element 901, detecting unit 902.
Receiving element 901 is used to receive the business datum after the 3R via node carries out relaying, and relay process comprises the optical channel OCh of termination regeneration business datum, and wherein, during termination optical channel OCh, OTU carries out transparent transmission to the optical channel delivery unit;
Detecting unit 902 is used for defects detection is carried out in the path of optical channel delivery unit OTU, obtains the testing result in the path of optical channel delivery unit OTU.
Wherein, the path of optical channel delivery unit OTU is for crossing over the path of 3R via node.
The optical channel OCh of above-mentioned termination regeneration business datum, wherein, during termination optical channel OCh, to optical channel delivery unit OTU carry out transparent transmission can for: when business datum is carried out decapsulation, after the decapsulation of finishing between optical channel OCh and the optical channel delivery unit OTU, do not carry out the decapsulation between optical channel delivery unit OTU and the Optical Channel Data Unit-k ODU; When the business datum after the decapsulation was heavily encapsulated, OTU was packaged into optical channel OCh with the optical channel delivery unit.
Node device also comprises: protection processing unit 903, be used for after there is defective in the path that detecting unit 902 detects optical channel delivery unit OTU, and trigger the protection of switching of optical channel delivery unit OTU level.
The path of 902 pairs of optical channel delivery units of detecting unit OTU carries out also comprising before the defects detection: defects detection is carried out in the path to optical channel OCh; Protection processing unit 903 triggers the protection of switching of optical channel OCh level after there is defective in the path OCh that detecting unit 902 detects optical channel.
Node device also comprises: error code monitor unit 904, be used for comparing by the information that the 3R via node is provided with in the expense of optical channel delivery unit OTU, obtain the result that error code monitors is carried out in the path of optical channel OCh according to canned data and business datum.
Figure 10 is embodiment of the invention node device two structural representations.
As shown in figure 10, node device comprises: acquiring unit 1001, processing unit 1002.
Acquiring unit 1001 is used for obtaining the expense of optical transfer network OTN frame;
Node device also comprises: protection processing unit 1003; be used in the path that defective determine to take place according to the client layer fail message processing unit 1002 when being path before being positioned at the node that inserts the client layer fail message, determine to insert path after the node of client layer fail message and do not carry out and switch.
Figure 11 is that embodiment of the invention network system is unified structural representation.
As shown in figure 11, network system comprises: first node equipment 1101, via node equipment 1102, Section Point equipment 1103.
Via node equipment 1102 is used for the business datum that receives is carried out relay process, and relay process comprises the optical channel OCh of termination regeneration business datum, wherein, during termination optical channel OCh, OTU carries out transparent transmission to the optical channel delivery unit, the business datum after the transmission relay process;
Figure 12 is embodiment of the invention network system two structural representations.
As shown in figure 12, network system comprises: first node equipment 1201, Section Point equipment 1202.
In sum; the embodiment of the invention is carried out relay process by the 3R via node; described relay process comprises the optical channel OCh of the described business datum of termination regeneration; wherein; when terminating described optical channel OCh, OTU carries out transparent transmission to the optical channel delivery unit, can be detected the defective in the path of the optical channel delivery unit OTU different with existing protection range by transparent transmission according to optical channel delivery unit OTU; can be for the subsequent process reference of professional transmission process, also with regard to perfect service transmission processing methods.
One of ordinary skill in the art will appreciate that all or part of step that realizes in the foregoing description method is to instruct relevant hardware to finish by program, described program can be stored in a kind of computer-readable recording medium, read-only memory for example, disk or CD etc.
More than a kind of service transmission processing methods, node device and network system that the embodiment of the invention provided are described in detail, used specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (17)
1. a service transmission processing methods is characterized in that, comprising:
Receive the business datum after the 3R via node carries out relay process, described relay process comprises the optical channel OCh of the described business datum of termination regeneration, and wherein, when terminating described optical channel OCh, OTU carries out transparent transmission to the optical channel delivery unit;
Defects detection is carried out in path to described optical channel delivery unit OTU, obtains the testing result in the path of described optical channel delivery unit OTU.
2. service transmission processing methods according to claim 1 is characterized in that:
The path of described optical channel delivery unit OTU is for crossing over the path of described 3R via node.
3. service transmission processing methods according to claim 1 and 2 is characterized in that, the regenerate optical channel OCh of described business datum of described termination wherein, when terminating described optical channel OCh, carries out transparent transmission to optical channel delivery unit OTU and is specially:
When described business datum is carried out decapsulation, after the decapsulation of finishing between optical channel OCh and the optical channel delivery unit OTU, do not carry out the decapsulation between optical channel delivery unit OTU and the Optical Channel Data Unit-k ODU;
When the business datum after the decapsulation was heavily encapsulated, OTU was packaged into optical channel OCh with the optical channel delivery unit.
4. service transmission processing methods according to claim 3 is characterized in that:
Described path to optical channel delivery unit OTU carries out also comprising before the defects detection: defects detection is carried out in the path to described optical channel OCh, has defective if detect the path of optical channel OCh, triggers the protection of switching of optical channel OCh level.
5. service transmission processing methods according to claim 1 and 2 is characterized in that:
Comprise after the testing result in the described path that obtains optical channel delivery unit OTU: if the testing result in the path of optical channel delivery unit OTU is for existing defective, triggering optical channel delivery unit OTU level switch protection.
6. service transmission processing methods according to claim 1 and 2 is characterized in that:
Also comprise according to the information that is provided with in the expense of described optical channel delivery unit OTU by the 3R via node in canned data and the described business datum comparing, obtain the result that error code monitors is carried out in the path of optical channel OCh.
7. a service transmission processing methods is characterized in that, comprising:
Obtain the expense in the optical transfer network OTN frame;
Judge whether contain the client layer fail message that behind Signal Fail, is inserted in the described expense, if, the path of determining to take place defective according to described client layer fail message.
8. service transmission processing methods according to claim 7 is characterized in that:
Described path according to the definite generation of client layer fail message defective comprises: determine that according to described client layer fail message the path of generation defective is to be positioned at the node path before of inserting the client layer fail message;
Comprise after the described path that defective determine to take place according to the client layer fail message: according to the path that defective takes place is the path that is positioned at before the node that inserts the client layer fail message, determines that path after the node of described insertion client layer fail message is not carried out to switch.
9. a node device is characterized in that, comprising:
Receiving element is used to receive the business datum after the 3R via node carries out relay process, and described relay process comprises the optical channel OCh of the described business datum of termination regeneration, and wherein, when terminating described optical channel OCh, OTU carries out transparent transmission to the optical channel delivery unit;
Detecting unit is used for defects detection is carried out in the path of described optical channel delivery unit OTU, obtains the testing result in the path of described optical channel delivery unit OTU.
10. node device according to claim 9 is characterized in that:
The business datum that described receiving element receives is comprised by the optical channel OCh of the described business datum of 3R via node termination regeneration:
When described business datum being carried out decapsulation, after the decapsulation of finishing between optical channel OCh and the optical channel delivery unit OTU, do not carry out the decapsulation between optical channel delivery unit OTU and the Optical Channel Data Unit-k ODU by described 3R via node; When heavily being encapsulated by the business datum of described 3R via node after to decapsulation, OTU is packaged into optical channel OCh with the optical channel delivery unit.
11. according to claim 9 or 10 described node devices, it is characterized in that, also comprise:
The protection processing unit is used for after there is defective in the path that described detecting unit detects optical channel delivery unit OTU, triggers the protection of switching of optical channel delivery unit OTU level.
12. node device according to claim 11 is characterized in that:
Described detecting unit carries out also comprising before the defects detection to the path of optical channel delivery unit OTU: defects detection is carried out in the path to described optical channel OCh;
Described protection processing unit triggers the protection of switching of optical channel OCh level after there is defective in the path OCh that described detecting unit detects optical channel.
13. according to claim 9 or 10 described node devices, it is characterized in that, also comprise:
The error code monitor unit is used for being compared by the information that the 3R via node is provided with in the expense of described optical channel delivery unit OTU according to canned data and described business datum, obtains the result that error code monitors is carried out in the path of optical channel OCh.
14. a node device is characterized in that, comprising:
Acquiring unit is used for obtaining the expense of optical transfer network OTN frame;
Processing unit is used for judging whether described expense contains the client layer fail message that is inserted into behind Signal Fail, if, the path of determining to take place defective according to described client layer fail message.
15. node device according to claim 14 is characterized in that, also comprises:
The protection processing unit; be used in the path that defective determine to take place according to described client layer fail message described processing unit when being path before being positioned at the node that inserts the client layer fail message, determine that path after the node of described insertion client layer fail message is not carried out to switch.
16. a network system is characterized in that, comprising:
First node equipment is used to send business datum;
Via node equipment is used for the business datum that receives is carried out relay process, and described relay process comprises the optical channel OCh of the described business datum of termination regeneration, wherein, when terminating described optical channel OCh, OTU carries out transparent transmission to the optical channel delivery unit, sends the business datum after the relay process;
Section Point equipment is used to receive the business datum that described via node sends, and defects detection is carried out in the path of described optical channel delivery unit OTU, obtains the testing result in the path of described optical channel delivery unit OTU.
17. a network system is characterized in that, comprising:
First node equipment is used for the business datum that receives is monitored, if find Signal Fail, the client layer fail message is inserted in the expense in the optical transfer network OTN frame;
Section Point equipment is used for obtaining the expense of the optical transfer network OTN frame that described first node equipment sends; Judge whether contain described client layer fail message in the described expense, if, the path of determining to take place defective according to described client layer fail message.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910140406.9A CN101883295B (en) | 2009-05-06 | 2009-05-06 | Service transmission processing methods, node equipment and network system |
| EP10771997.3A EP2429107B1 (en) | 2009-05-06 | 2010-04-24 | Methods, node equipment and network system for service transmission processing |
| PCT/CN2010/072174 WO2010127594A1 (en) | 2009-05-06 | 2010-04-24 | Methods, node equipment and network system for service transmission processing |
| ES10771997.3T ES2644521T3 (en) | 2009-05-06 | 2010-04-24 | Procedures, node equipment and network system for service transmission processing |
| US13/289,712 US9088379B2 (en) | 2009-05-06 | 2011-11-04 | Service transmission processing method, node device and network system |
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| CN200910140406.9A CN101883295B (en) | 2009-05-06 | 2009-05-06 | Service transmission processing methods, node equipment and network system |
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| CN101883295B CN101883295B (en) | 2014-04-30 |
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| US (1) | US9088379B2 (en) |
| EP (1) | EP2429107B1 (en) |
| CN (1) | CN101883295B (en) |
| ES (1) | ES2644521T3 (en) |
| WO (1) | WO2010127594A1 (en) |
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Also Published As
| Publication number | Publication date |
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| EP2429107A1 (en) | 2012-03-14 |
| US9088379B2 (en) | 2015-07-21 |
| WO2010127594A1 (en) | 2010-11-11 |
| EP2429107A4 (en) | 2012-03-14 |
| US20120051736A1 (en) | 2012-03-01 |
| EP2429107B1 (en) | 2017-09-06 |
| ES2644521T3 (en) | 2017-11-29 |
| CN101883295B (en) | 2014-04-30 |
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